Author Affiliation

Dept. of Organic Chemistry, Qingdao University of Science and Technology, Tsingtao, China.


Article History

Received: 22 JULY 2015 / Revised: 13 Aug 2015 / Accepted: 15 Sep 2015 / Published: 22 June 2015


How to Cite This Article

Xingguo Chen.; Hauitao Liug.; Huiwen Wang.; Lijun Dong.; Hongping Xue.; Zhide Hug (2015): Pesticide residue analysis in crops by LC-MS/MS method. International Journal of Agricultural and Life sciences 1 (1), pp. 1–4. DOI 10.9379/sfjal. 122057-001-0081-x.


Copyright

© 2015 Xingguo Chen et al. This is an open accessarticle distributed under the terms of the CreativeCommons Attribution License, which permits unrestricted use,distribution, and reproduction in any medium, provided the original author andsource are credited.


Competing Interests


Abstract

An LC-MS-MS assay is described for fluazifop residue analysis in crops. The residues are extracted with acidified organic solvent, the esters and conjugates are hy¬drolysed with 6.01 M hydrochloric acid, then the extracts are cleaned-up by solid phase extraction using C2(EC) and Si cartridges in tandem. Quantitative analysis is performed by gradient liquid chromatography coupled to triple quad- rupole mass spectrometer using atmospheric pressure chemical ionization. All fluazifop-P-butyl, free fluazifop- P and any conjugates are quantified as fluazifop-P. The limit of quantification is 0.012-0.054 mg/kg depending on crop matrices. The clean-up method is also suitable for LC-UV analysis with a compromise in higher limit of quantification 0.052-0.22 mg/kg.